there is one bluetooth modules which i had chosen but i am confuse whether it is right choice or not; here is link for my chosen bluetooth module "http://www.dfrobot.com/index.php?route=product/product&product_id=360"
DF-BluetoothV3 Bluetooth module uses a unique double-board design, it is beautiful
at one end there will be arduino with BT module and Mic with amplifier
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via Egeo 16